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Contract OI history

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Dec 18, 2026 EXPIRATION

PFE $40.00 Call

PFE261218C00040000

Latest saved OI23,531Oct 23, 2026
Last change+101vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 23,53111,7650 2026-10-02: 22,830 OI2026-10-05: 22,835 OI2026-10-06: 22,852 OI2026-10-07: 22,879 OI2026-10-08: 22,879 OI2026-10-09: 22,886 OI2026-10-13: 22,886 OI2026-10-14: 22,886 OI2026-10-15: 22,912 OI2026-10-16: 23,495 OI2026-10-21: 23,430 OI2026-10-23: 23,531 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

PFE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing23,531+101
Oct 21, 202623,430-65
Oct 16, 202623,495+583
Oct 15, 202622,912+26
Oct 14, 202622,8860
Oct 13, 202622,8860
Oct 09, 202622,886+7
Oct 08, 202622,8790
Oct 07, 202622,879+27
Oct 06, 202622,852+17
Oct 05, 202622,835+5
Oct 02, 202622,830No prior observation